Player Handbook 2 - Invoker:
The greatest of the gods’ mortal agents in that war were invokers, imbued
with a fragment of the gods’ own might to fight alongside them. No other mortal servant of the gods
can claim the same kind of power. Through rites of investiture, avengers, clerics, and paladins gain the ability to manifest echoes of that power, uttering careful prayers and channeling divine energy through their holy symbols. You, however, channel your god’s power directly. No mere symbol can contain it, for you speak the words of creation, shaping the universe to your and your god’s will.

They both have the 'Divine' power source, yeah, but read the lore - it's divine power from different sources.

Also they're more like Wizards than either Sorcs or Warlocks. Invokers and Wizards are controllers, Sorcs and Warlocks are strikers.

The chosen/vision thing is backstory dependant. My specific character had visions. Can't say he didn't, because he did.

Also the word of power thing is an Invoker Paragon Path I believe, although the base Invoker may have had a few powers along those lines.

What do you mean different sources? You mean like covenant?
Yes, as I said the Invokers make a pact - just like warlocks do - instead they call it covenant and it is with deities. And instead of damning the soul it damns the body as the power is too strong for the vessel.

As for what they are more like, if it is an analogy - they are closer to warlocks. For they form covenants - which is supernal word for infernal pact. They don't **** their souls but their life is lessened due to their bodies being incapable of the divine power they get to wield.

So divinity from clerics is replaced by covenants by invokers, replaced by Censure in avenger etc.

Shards of Selune no longer exists. Sorry to the fans. It was fun as long as it lasted.

Yeah you're right about that. I would agree it fits the Warlock closer.

And yeah I mean exactly that - Invokers gain power through their 'pacts', or personal relationships with their Gods, while Clerics and Paladins gain theirs through faith and prayer. It all belongs to the 'Divine' source, but they manifest from different places in different ways.

Yes, (Templar) Clerics gain power from the clergy which once was granted from a divine source.

Schooled in religious traditions from childhood, templars wield divine powers entrusted to them through ordination or investiture in the service of a deity.

AVENGERS, not Invokers use "pacts."

In secret temples far from bustling cities and priestly hierarchies, orders of esoteric warriors train their initiates in ancient traditions now forgotten or forbidden by most religious organizations. The champions of these orders are avengers—deadly weapons in the hands of their gods, imbued with divine power through secret rites of initiation. In battle, avengers swear to execute divine vengeance, entering a mental state that gives them unerring focus on a single enemy.

As an avenger, you were trained in a monastery, initiated through secret rites, and imbued with the power to smite your god’s foes. You might be a disciple of Ioun, sworn to hunt and exterminate the minions of Vecna until you one day face the Maimed God. You could be an agent of the Raven Queen, bringing death to those who would defy your mistress. Or perhaps you serve Bahamut as an agent of justice, bringing ruin to tyrants and oppressors. The organizations devoted to your god might view you as a heretic or a hero, but you answer only to your god and to the vows you swore upon your initiation as an avenger.

INVOKERS gain power through divine grants.

At the dawn of time, the gods who inhabited the Astral Sea warred with the primordials of the Elemental Chaos, the mighty beings who shaped the world out of formless void. The greatest of the gods' mortal agents in that war were invokers, imbued with a fragment of the gods' own might to fight alongside them. No other mortal servant of the gods can claim the same kind of power. Through rites of investiture, avengers, clerics, and paladins gain the ability to manifest echoes of that power, uttering careful prayers and channeling divine energy through their holy symbols. You, however, channel your god's power directly. No mere symbol can contain it, for you speak the words of creation, shaping the universe to your and your god's will.

So sometimes, people gain divine power directly from the divine source, but not usually.
Even with this class that does this in 4E, it is supposed to be considered as rare as the Favored Souls of 3rd ed were.

Gods, what are you all doing to my worshiped facts?!
- I think its semantics. Will use appropriate 4e terms here then so "pacts" and "grants" dont cause confusion.

Yes, (Templar) Clerics gain power from the clergy which once was granted from a divine source.
- Powers to all clerics are ordained by clergy, but it has to be sanctioned by the deity.

AVENGERS,
- Are also ordained by a religious order just like cleric. Their power is determined by their Zeal.

INVOKERS gain power ...
- Through covenant with deity(unlike cleric or avengers). The deity uses them as their vessel in this world.

~~~

"Pact" in correct context above referred to the 'infernal pact' which means the 'devil's contract' or something equivalent to that.
Covenant is an agreement between deity and subject which lets them use the power of deity. (Though unlike infernal pact, it does not cost your soul){opinion- invokers are comparable as divine warlocks}

Avengers are ordained by religious order too - but unlike religious order for clerics, these are usually zealous, secretive and unliked by people(due to fear). {opinion- This aptly falls under divine assassin category.}

~~~

For explanation how the cleric whose god is dead lose their divine power - check the official campaign on waterdeep in 4e. The one where you go to that inn with bucket (as in NWN second expansion) and explore the caves. It has a dead cleric of Lathander.

Shards of Selune no longer exists. Sorry to the fans. It was fun as long as it lasted.

So, Knowers of the Canon, I have a concept question. I have a concept for a cleric who is devoted to a frog god who dwells in a swampy pond that represents the generation of life.
Which diety of Neverwinter would most closely represent this?
After looking at the list, I'm thinking the Unicorn Queen of the Wild Woods or perhaps Selune might work best out of the available list. The frog symbology could represent a "pet" to one of those dieties.
Any advise?

So, Knowers of the Canon, I have a concept question. I have a concept for a cleric who is devoted to a frog god who dwells in a swampy pond that represents the generation of life.
Which diety of Neverwinter would most closely represent this?
After looking at the list, I'm thinking the Unicorn Queen of the Wild Woods or perhaps Selune might work best out of the available list. The frog symbology could represent a "pet" to one of those dieties.
Any advise?

It doesn't fill divine theme. Instead go with Primal, like say that you found an island which was actually that turtle thingy in primals where you found a frog god, who shared power with you.

Shards of Selune no longer exists. Sorry to the fans. It was fun as long as it lasted.

So, Knowers of the Canon, I have a concept question. I have a concept for a cleric who is devoted to a frog god who dwells in a swampy pond that represents the generation of life.
Which diety of Neverwinter would most closely represent this?
After looking at the list, I'm thinking the Unicorn Queen of the Wild Woods or perhaps Selune might work best out of the available list. The frog symbology could represent a "pet" to one of those dieties.
Any advise?

I'd suggest looking into either Silvanus, Chauntea, or Lurue (as you mentioned). Lurue is more primal magic in nature and would probably fit the theme better, as Gillrimn was pointing out about primal. Mielikki may also be of interest.